Answer:
37.04 m/s
Step-by-step explanation:
we can use the equation x = x0 + v0t + 1/2at^2
a = -9.8 m/s^2, the acceleration due to gravity
x0 = 70 m, the starting point of x
v0 = 0 m/s
x = 0
this will allow us to solve for time
0 = 70 + 0 +-4.9t^2
t = 3.779
now we can use the equation v = v0 + at
v = 0 + 9.8(3.77)
v = 37.04 m/s
It is the tenths because it is 1 digit to the right of the decimal
Answer:
25 K³ - 35k²+ 50 K - 40
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Step-by-step explanation:
Given that :
(-5k + 5)(-5k² + 2k - 8)
= -5K (-5k² + 2k - 8) + 5 (-5k² + 2k - 8)
= 25 K³ - 10k² + 40 K - 25 K² + 10 K - 40
= 25 K³ - 35k²+ 50 K - 40
<u>So, the product = 25 K³ - 35k²+ 50 K - 40</u>